Finding the Fourth Proportional to 56,753.01, 78,319.69 and 31,259.47

Step by Step Solution

1. Step 1: Write the proportion equation
   56,753.01 : 78,319.69 = 31,259.47 : x
2. Step 2: Convert to fraction form
   56,753.01/78,319.69 = 31,259.47/x
3. Step 3: Cross multiply
   56,753.01x = 78,319.69 × 31,259.47
4. Step 4: Simplify right side
   56,753.01x = 2,448,231,999.96
5. Step 5: Solve for x
   x = 2,448,231,999.96/56,753.01
6. Step 6: Final answer
   x = 43,138.36